VHF ADAPTIVE ANTENNA DEVELOPMENT TASK: FINAL REPORT

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Authors
  1. Jenkins, R.W.
  2. Tenne-Sens, U.A.
  3. Lisson, B.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN);Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The work of the VHF adaptive antenna developmen task is reported. An adaptive-antenna test bed was assembled, including a programmable real-time signal processing system. Power-ratio inversion (PRI) and eigenvector-weighting (EV) adaptive algorithms were investigated analytically and by means of simulation, and implemented in two-element form on the real-time processor. These algorithms tend to separate incoming signals into different output channels according to their relative strengths, and do not require a priori information on the communications being received. The PRI algorithm was expected to invert the relative input powers of the jamming and communications signal, in the output signal. Analyses indicated that the EV algorithm should perform better than the PRI algorithm, especially when the incoming jamming and communications signal are well-separated in direction. Tests with real-world signals revealed deficiencies in the hardware implementation, as well as limitations in the algorithms themselves. Means of correcting the deficiencies are identified, and proposed for a new real-time signal processor to be implemented as part of a continuing technology-base activity. TRUNCATED
Keywords
POWER RATIO INVERSION;EIGENVECTOR WEIGHTING
Report Number
CRC-93-003 — Final Report
Date of publication
01 Jun 1993
Number of Pages
68
DSTKIM No
94-05507
CANDIS No
142973
Format(s):
Hardcopy;Document Image stored on Optical Disk

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